DAY 316:

Today’s Challenge

. . . is one from our range of MATHELONA number puzzles now available in pocket book format.  Your task is to make all three lines work out arithmetically by replacing the 12 ◯’s with the following numbers:

0     0     1     1     2     2     2     2     4     5     6     7

Can you successfully complete this?

◯  +  ◯   =    6    =   ◯  –  ◯
◯  +  ◯   =    2    =   ◯  ×  ◯
◯  +  ◯   =    7    =   ◯  ÷  ◯

Full details of our pocket book can be found by clicking MATHELONA.

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.

The 1st & 2nd columns of the playing board contain the following fourteen numbers:

2    10    13    16    21    22    27    33    45    48    55    56    60    70

What is the sum of the multiples of 11 listed above?

Make 316 Challenge

Can you arrive at 316 by inserting 2, 4, 5, 6 and 7 into the gaps below?

◯²×◯²–◯×◯×◯ = 316

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

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